Pollyanna vs doom merchant

Pollyanna

name
  • A female given name from Hebrew derived from Polly and Anna; rare in the real world. 

noun
  • One who is persistently cheerful and optimistic, even when given cause not to be so. 

  • A secret Santa gift exchange. 

doom merchant

How often have the words Pollyanna and doom merchant occurred in a corpus of books? (source: Google Ngram Viewer )